Table 1:
Patient-specific risk factors for removal or revision
| Risk factors | Prosthesis removal or revision | Percent removed or revised | p value a | ||
|---|---|---|---|---|---|
| Overall N = 312 (%) |
No n = 277 (%) |
Yes n = 35 (%) |
11.2% | ||
| Age, median (IQR) | 58 (45–66) | 58 (46–66) | 51 (32–63) | 0.09 | |
| Categorical age | < 0.01 | ||||
| < 40 years | 53 (17.0) | 41 | 12 | 22.6 | |
| ≥ 40 years | 259 (83.0) | 236 | 23 | 8.9 | |
| BMI, median (IQR)b | 29.0 (25.7–34.2) | 29.2 (25.5–34.2) | 28.2 (25.7–34.7) | 0.65 | |
| Categorical BMI | 0.56 | ||||
| < 25 | 67 (21.9) | 60 | 7 | 10.4 | |
| 25–29 | 97 (31.7) | 83 | 14 | 14.4 | |
| 30–34 | 78 (25.5) | 72 | 6 | 7.7 | |
| ≥ 35 | 64 (20.9) | 56 | 8 | 12.5 | |
| Sex, n (%) | 0.93 | ||||
| Men | 127 (40.7) | 113 | 14 | 11.0 | |
| Women | 185 (59.3) | 164 | 21 | 11.4 | |
| Diabetes, n (%) | 0.55 | ||||
| No | 281 (90.1) | 248 | 33 | 11.7 | |
| Yes | 31 (9.9) | 29 | 2 | 6.5 | |
| Charlson Comorbidity, no. (%) | 0.97 | ||||
| 0 | 220 (70.5) | 195 | 25 | 11.4 | |
| 1–3 | 81 (26.0) | 72 | 9 | 11.1 | |
| ≥ 4 | 11 (3.5) | 10 | 1 | 9.1 | |
a
Age and BMI p values calculated using Kruskal-Wallis tests. Categorical comparisons made with χ² tests. Fisher’s exact test used for diabetes variable.
b
Missing BMI values for 6 patients.
BMI, body mass index; IQR, interquartile range.